I know every sitcom recycles jokes and situations, but it really does take the biscuit. It's not the worst, bit it's definitely one of the most overrated.
I think some people watch it because they think it indicates they are more intelligent or geeky.
The Big Bang Theory is depressingly mediocre to anyone with an ounce of comedic nous, but to decry it as 'worst ever' is to overlook this kind of lazy, putrid dross: